中国の炭鉱メタン政策におけるテーマ進化と政策設計の一貫性:LDAとPMC分析によるエビデンス
Thematic Evolution and Policy Design Consistency in China’s Coal Mine Methane Policy: Evidence from LDA and PMC Analysis (原題)
Ruixin Wang, Yanqing Wang, Ming Cao, Xiao Gu
🤖 gxceed AI 要約
日本語
中国の炭鉱メタン(CMM)政策163件をLDAで分析し、4つのテーマを抽出。1988〜2025年で炭鉱ガス安全管理が継続する一方、メタン利用と低炭素移行が近年顕著に。PMC指標による12政策の評価では総合一貫性は許容〜優秀だが、政策適時性・政策手段・対象主体の次元が低く、今後の政策設計上の課題を指摘。
English
Using LDA on 163 Chinese coal mine methane (CMM) policy texts (1988-2025), four themes emerged: extraction/utilization, CBM planning, methane utilization/low-carbon transition, and gas safety. PMC assessment of 12 policies showed acceptable-to-excellent consistency but weak timeliness, instruments, and target-actor specification, highlighting design gaps.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
中国の炭鉱メタン政策は、日本企業が関与する石炭調達・CCUS・メタン削減の国際枠組み(Global Methane Pledge等)と間接的に関連。政策手段の構成や適時性の評価手法は、日本のGX政策設計やSSBJ開示における政策評価の参考になり得る。
In the global GX context
This study offers a replicable text-as-data method (LDA + PMC) for evaluating policy design consistency, relevant to global methane mitigation and just transition debates. It adds empirical evidence on how climate and safety priorities co-evolve in a major coal economy, informing international policy benchmarking.
👥 読者別の含意
🔬研究者:政策テキスト分析とPMC指標を組み合わせた手法は、他国の気候・エネルギー政策評価に応用可能。
🏢実務担当者:中国の炭鉱メタン規制動向は、石炭調達やメタン削減義務のサプライチェーンリスク評価に資する。
🏛政策担当者:政策の適時性・手段・対象主体のバランスを欠く点は、日本のGX政策設計における教訓となり得る。
📄 Abstract(原文)
Coal mining is a major source of energy-related methane emissions; coal mine methane (CMM) governance is therefore relevant to climate mitigation and environmental sustainability. However, systematic evidence remains limited on how policy attention has evolved across China’s CMM policy system and how key design elements are configured within individual policies. This study examines the thematic evolution and policy design consistency of China’s CMM policies from 1988 to 2025. Latent Dirichlet Allocation (LDA) was applied to 163 policy texts, and the Policy Modeling Consistency (PMC) Index was used to assess 12 selected policies. Four themes were identified: CMM extraction and utilization, coalbed methane resource planning and regulation, methane utilization and low-carbon transition, and coal mine gas safety management. Coal mine gas safety management remained recurrent, while methane utilization and low-carbon transition became more prominent in later years. The PMC assessment indicated acceptable-to-excellent overall consistency but uneven dimensional coverage; Policy Timeliness, Policy Instruments, and Policy Object had the lowest mean scores. These findings indicate that policy timeliness, instrument configuration, and target-actor specification warrant particular attention in future CMM policy design.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.3390/su18199977first seen 2026-10-02 04:58:33
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